Dataframe transforms are not persistent across saves?

[fgeorgepar]

I opened up a new notebook and created a few dataframe transforms using mo.ui.dataframe() (i.e., filters, expand dict) expecting them to be persistent across saves of the notebook. I was surprised to open up the notebook later and had blank transforms with nothing selected. Is this the intended behavior or am I missing a configuration somewhere that persists these elements? Is it not possible to save the state of the notebook to capture these changes to filters or other transforms? Thanks in advance.